AQSQID: 080013001

Site Name: Welby - 78th Ave. & Steele St.

Location: Denver (Steele St), CO

Reporting: True, Located: True

Current AQI: 25.0

Denver (Steele St) CO, US: 39.8392, -104.9489

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 22, 2020, noon N/A N/A N/A 12.0 ppb (11) N/A 1.0 ppb (1) 32.0 ppb (25) 0.1 ppb (1) 11.0 μg/m3 (10) N/A 25.0
 
Jan. 22, 2020, 11 a.m. N/A N/A N/A 32.0 ppb (30) N/A 2.0 ppb (3) 11.0 ppb (8) 0.5 ppb (6) 18.0 μg/m3 (16) N/A 30.0
 
Jan. 22, 2020, 10 a.m. N/A N/A N/A 45.0 ppb (42) N/A 3.0 ppb (4) 1.0 ppb (1) 1.0 ppb (11) 59.0 μg/m3 (52) N/A 52.0
 
Jan. 22, 2020, 9 a.m. N/A N/A N/A 43.0 ppb (40) N/A 2.0 ppb (3) 0.0 ppb (0) 0.8 ppb (9) 55.0 μg/m3 (50) N/A 50.0
 
Jan. 22, 2020, 8 a.m. N/A N/A N/A 43.0 ppb (40) N/A 2.0 ppb (3) 0.0 ppb (0) 1.0 ppb (11) 75.0 μg/m3 (60) N/A 60.0
 
Jan. 22, 2020, 7 a.m. N/A N/A N/A 41.0 ppb (38) N/A 3.0 ppb (4) 1.0 ppb (1) 1.2 ppb (13) 104.0 μg/m3 (74) N/A 74.0
 
Jan. 22, 2020, 6 a.m. N/A N/A N/A 36.0 ppb (33) N/A 2.0 ppb (3) 0.0 ppb (0) 1.0 ppb (11) 89.0 μg/m3 (67) N/A 67.0
 
Jan. 22, 2020, 5 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 0.0 ppb (0) 0.9 ppb (10) 104.0 μg/m3 (74) N/A 74.0
 
Jan. 22, 2020, 4 a.m. N/A N/A N/A 38.0 ppb (35) N/A 2.0 ppb (3) 0.0 ppb (0) 0.8 ppb (9) 107.0 μg/m3 (76) N/A 76.0
 
Jan. 22, 2020, 3 a.m. N/A N/A N/A 35.0 ppb (32) N/A 1.0 ppb (1) 0.0 ppb (0) 0.6 ppb (7) 123.0 μg/m3 (84) N/A 84.0
 
Jan. 22, 2020, 2 a.m. N/A N/A N/A 36.0 ppb (33) N/A 1.0 ppb (1) 0.0 ppb (0) 0.5 ppb (6) 117.0 μg/m3 (81) N/A 81.0
 
Jan. 22, 2020, 1 a.m. N/A N/A N/A 40.0 ppb (37) N/A 1.0 ppb (1) 0.0 ppb (0) 0.4 ppb (4) 97.0 μg/m3 (71) N/A 71.0
 
Jan. 22, 2020, midnight N/A N/A N/A 44.0 ppb (41) N/A 1.0 ppb (1) 0.0 ppb (0) 0.4 ppb (4) 61.0 μg/m3 (53) N/A 53.0
 
Jan. 21, 2020, 11 p.m. N/A N/A N/A 47.0 ppb (44) N/A 1.0 ppb (1) 3.0 ppb (2) 0.4 ppb (4) 70.0 μg/m3 (58) N/A 58.0
 
Jan. 21, 2020, 10 p.m. N/A N/A N/A 52.0 ppb (48) N/A 2.0 ppb (3) 3.0 ppb (2) 0.6 ppb (7) 88.0 μg/m3 (66) N/A 66.0
 
Jan. 21, 2020, 9 p.m. N/A N/A N/A 52.0 ppb (48) N/A 2.0 ppb (3) 3.0 ppb (2) 0.7 ppb (8) 106.0 μg/m3 (76) N/A 76.0
 
Jan. 21, 2020, 8 p.m. N/A N/A N/A 54.0 ppb (50) N/A 3.0 ppb (4) 3.0 ppb (2) 0.7 ppb (8) 97.0 μg/m3 (71) N/A 71.0
 
Jan. 21, 2020, 7 p.m. N/A N/A N/A 56.0 ppb (52) N/A 3.0 ppb (4) 3.0 ppb (2) N/A 116.0 μg/m3 (80) N/A 80.0
 
Jan. 21, 2020, 6 p.m. N/A N/A N/A 60.0 ppb (56) N/A 4.0 ppb (6) 3.0 ppb (2) N/A 152.0 μg/m3 (98) N/A 98.0
 
Jan. 21, 2020, 5 p.m. N/A N/A N/A 67.0 ppb (64) N/A 5.0 ppb (7) 2.0 ppb (2) N/A 225.0 μg/m3 (135) N/A 135.0
 
Jan. 21, 2020, 4 p.m. N/A N/A N/A 51.0 ppb (47) N/A N/A 2.0 ppb (2) N/A 158.0 μg/m3 (102) N/A 102.0
 
Jan. 21, 2020, 3 p.m. N/A N/A N/A 48.0 ppb (44) N/A 3.0 ppb (4) N/A N/A 130.0 μg/m3 (88) N/A 88.0
 
Jan. 21, 2020, 2 p.m. N/A N/A N/A 46.0 ppb (43) N/A 3.0 ppb (4) 0.0 ppb (0) 1.0 ppb (11) 129.0 μg/m3 (87) N/A 87.0
 
Jan. 21, 2020, 1 p.m. N/A N/A N/A 42.0 ppb (39) N/A 3.0 ppb (4) 0.0 ppb (0) 1.0 ppb (11) 101.0 μg/m3 (73) N/A 73.0
 
Jan. 21, 2020, noon N/A N/A N/A 38.0 ppb (35) N/A 2.0 ppb (3) 0.0 ppb (0) 0.8 ppb (9) 70.0 μg/m3 (58) N/A 58.0
 
Jan. 21, 2020, 11 a.m. N/A N/A N/A 37.0 ppb (34) N/A 1.0 ppb (1) 0.0 ppb (0) 0.8 ppb (9) 54.0 μg/m3 (49) N/A 49.0
 
Jan. 21, 2020, 10 a.m. N/A N/A N/A 36.0 ppb (33) N/A 1.0 ppb (1) 0.0 ppb (0) 0.8 ppb (9) 58.0 μg/m3 (52) N/A 52.0
 
Jan. 21, 2020, 9 a.m. N/A N/A N/A 35.0 ppb (32) N/A 1.0 ppb (1) 0.0 ppb (0) 0.8 ppb (9) 56.0 μg/m3 (50) N/A 50.0
 
Jan. 21, 2020, 8 a.m. N/A N/A N/A 39.0 ppb (36) N/A 1.0 ppb (1) 0.0 ppb (0) 0.9 ppb (10) 55.0 μg/m3 (50) N/A 50.0
 
Jan. 21, 2020, 7 a.m. N/A N/A N/A 41.0 ppb (38) N/A 1.0 ppb (1) 1.0 ppb (1) 0.9 ppb (10) 59.0 μg/m3 (52) N/A 52.0
 
Jan. 21, 2020, 6 a.m. N/A N/A N/A 39.0 ppb (36) N/A 1.0 ppb (1) 0.0 ppb (0) 0.9 ppb (10) 56.0 μg/m3 (50) N/A 50.0
 
Jan. 21, 2020, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 0.0 ppb (0) 0.9 ppb (10) 77.0 μg/m3 (61) N/A 61.0
 
Jan. 21, 2020, 4 a.m. N/A N/A N/A 42.0 ppb (39) N/A 1.0 ppb (1) 0.0 ppb (0) 0.6 ppb (7) 67.0 μg/m3 (56) N/A 56.0
 
Jan. 21, 2020, 3 a.m. N/A N/A N/A 42.0 ppb (39) N/A 0.0 ppb (0) 1.0 ppb (1) 0.5 ppb (6) 71.0 μg/m3 (58) N/A 58.0
 
Jan. 21, 2020, 2 a.m. N/A N/A N/A 39.0 ppb (36) N/A 0.0 ppb (0) 6.0 ppb (5) 0.3 ppb (3) 59.0 μg/m3 (52) N/A 52.0
 
Jan. 21, 2020, 1 a.m. N/A N/A N/A 40.0 ppb (37) N/A 0.0 ppb (0) 4.0 ppb (3) 0.3 ppb (3) 67.0 μg/m3 (56) N/A 56.0
 
Jan. 21, 2020, midnight N/A N/A N/A 38.0 ppb (35) N/A 0.0 ppb (0) 8.0 ppb (6) 0.3 ppb (3) 89.0 μg/m3 (67) N/A 67.0
 
Jan. 20, 2020, 11 p.m. N/A N/A N/A 19.0 ppb (18) N/A 0.0 ppb (0) 27.0 ppb (21) 0.2 ppb (2) 60.0 μg/m3 (52) N/A 52.0
 
Jan. 20, 2020, 10 p.m. N/A N/A N/A 15.0 ppb (14) N/A 0.0 ppb (0) 36.0 ppb (28) 0.2 ppb (2) 51.0 μg/m3 (46) N/A 46.0
 
Jan. 20, 2020, 9 p.m. N/A N/A N/A 13.0 ppb (12) N/A 0.0 ppb (0) 38.0 ppb (29) 0.2 ppb (2) 42.0 μg/m3 (38) N/A 38.0
 
Jan. 20, 2020, 8 p.m. N/A N/A N/A 20.0 ppb (19) N/A 0.0 ppb (0) 33.0 ppb (25) 0.3 ppb (3) 32.0 μg/m3 (29) N/A 29.0
 
Jan. 20, 2020, 7 p.m. N/A N/A N/A 32.0 ppb (30) N/A 2.0 ppb (3) 22.0 ppb (17) 0.3 ppb (3) 60.0 μg/m3 (52) N/A 52.0
 
Jan. 20, 2020, 6 p.m. N/A N/A N/A 42.0 ppb (39) N/A 2.0 ppb (3) 14.0 ppb (11) 0.4 ppb (4) 67.0 μg/m3 (56) N/A 56.0
 
Jan. 20, 2020, 5 p.m. N/A N/A N/A 46.0 ppb (43) N/A 3.0 ppb (4) 9.0 ppb (7) 0.6 ppb (7) 72.0 μg/m3 (58) N/A 58.0
 
Jan. 20, 2020, 4 p.m. N/A N/A N/A 52.0 ppb (48) N/A 3.0 ppb (4) 5.0 ppb (4) 0.9 ppb (10) 111.0 μg/m3 (78) N/A 78.0
 
Jan. 20, 2020, 3 p.m. N/A N/A N/A 50.0 ppb (46) N/A 2.0 ppb (3) 3.0 ppb (2) 1.0 ppb (11) 66.0 μg/m3 (56) N/A 56.0
 
Jan. 20, 2020, 2 p.m. N/A N/A N/A 47.0 ppb (44) N/A 2.0 ppb (3) 0.0 ppb (0) 1.2 ppb (13) 85.0 μg/m3 (65) N/A 65.0
 
Jan. 20, 2020, 1 p.m. N/A N/A N/A 42.0 ppb (39) N/A 2.0 ppb (3) 0.0 ppb (0) 1.2 ppb (13) 43.0 μg/m3 (39) N/A 39.0
 
Jan. 20, 2020, noon N/A N/A N/A 38.0 ppb (35) N/A 1.0 ppb (1) 0.0 ppb (0) 0.9 ppb (10) 29.0 μg/m3 (26) N/A 35.0
 
Jan. 20, 2020, 11 a.m. N/A N/A N/A 37.0 ppb (34) N/A 1.0 ppb (1) 0.0 ppb (0) 0.7 ppb (8) 21.0 μg/m3 (19) N/A 34.0
 
Jan. 20, 2020, 10 a.m. N/A N/A N/A 38.0 ppb (35) N/A 1.0 ppb (1) 0.0 ppb (0) 0.7 ppb (8) 21.0 μg/m3 (19) N/A 35.0
 
Jan. 20, 2020, 9 a.m. N/A N/A N/A 39.0 ppb (36) N/A 0.0 ppb (0) 0.0 ppb (0) 0.7 ppb (8) 22.0 μg/m3 (20) N/A 36.0
 
Jan. 20, 2020, 8 a.m. N/A N/A N/A 37.0 ppb (34) N/A 0.0 ppb (0) 0.0 ppb (0) 0.6 ppb (7) 23.0 μg/m3 (21) N/A 34.0
 
Jan. 20, 2020, 7 a.m. N/A N/A N/A 39.0 ppb (36) N/A 0.0 ppb (0) 0.0 ppb (0) 0.7 ppb (8) 26.0 μg/m3 (24) N/A 36.0
 
Jan. 20, 2020, 6 a.m. N/A N/A N/A 38.0 ppb (35) N/A 0.0 ppb (0) 0.0 ppb (0) 0.5 ppb (6) 24.0 μg/m3 (22) N/A 35.0
 
Jan. 20, 2020, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 1.0 ppb (1) 0.8 ppb (9) 42.0 μg/m3 (38) N/A 38.0
 
Jan. 20, 2020, 4 a.m. N/A N/A N/A 40.0 ppb (37) N/A 0.0 ppb (0) 0.0 ppb (0) 0.6 ppb (7) 45.0 μg/m3 (41) N/A 41.0
 
Jan. 20, 2020, 3 a.m. N/A N/A N/A 41.0 ppb (38) N/A 0.0 ppb (0) 1.0 ppb (1) 0.5 ppb (6) 37.0 μg/m3 (34) N/A 38.0
 
Jan. 20, 2020, 2 a.m. N/A N/A N/A 39.0 ppb (36) N/A 0.0 ppb (0) 1.0 ppb (1) 0.6 ppb (7) 33.0 μg/m3 (30) N/A 36.0
 
Jan. 20, 2020, 1 a.m. N/A N/A N/A 23.0 ppb (21) N/A 0.0 ppb (0) 15.0 ppb (12) 0.3 ppb (3) 22.0 μg/m3 (20) N/A 21.0
 
Jan. 20, 2020, midnight N/A N/A N/A 14.0 ppb (13) N/A 0.0 ppb (0) 27.0 ppb (21) 0.2 ppb (2) 34.0 μg/m3 (31) N/A 31.0
 
Jan. 19, 2020, 11 p.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 39.0 ppb (30) 0.1 ppb (1) 20.0 μg/m3 (18) N/A 30.0
 
Jan. 19, 2020, 10 p.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) 39.0 ppb (30) 0.1 ppb (1) 11.0 μg/m3 (10) N/A 30.0
 
Jan. 19, 2020, 9 p.m. N/A N/A N/A 12.0 ppb (11) N/A 0.0 ppb (0) 34.0 ppb (26) 0.2 ppb (2) 10.0 μg/m3 (9) N/A 26.0
 
Jan. 19, 2020, 8 p.m. N/A N/A N/A 19.0 ppb (18) N/A 0.0 ppb (0) 27.0 ppb (21) 0.3 ppb (3) 10.0 μg/m3 (9) N/A 21.0
 
Jan. 19, 2020, 7 p.m. N/A N/A N/A 30.0 ppb (28) N/A 1.0 ppb (1) 19.0 ppb (15) 0.4 ppb (4) 31.0 μg/m3 (28) N/A 28.0
 
Jan. 19, 2020, 6 p.m. N/A N/A N/A 31.0 ppb (29) N/A 2.0 ppb (3) 17.0 ppb (13) 0.4 ppb (4) 30.0 μg/m3 (27) N/A 29.0
 
Jan. 19, 2020, 5 p.m. N/A N/A N/A 33.0 ppb (31) N/A 1.0 ppb (1) 12.0 ppb (9) 0.4 ppb (4) 38.0 μg/m3 (35) N/A 35.0
 
Jan. 19, 2020, 4 p.m. N/A N/A N/A 39.0 ppb (36) N/A 1.0 ppb (1) 7.0 ppb (5) 0.6 ppb (7) 43.0 μg/m3 (39) N/A 39.0
 
Jan. 19, 2020, 3 p.m. N/A N/A N/A 35.0 ppb (32) N/A 1.0 ppb (1) 3.0 ppb (2) 0.7 ppb (8) 30.0 μg/m3 (27) N/A 32.0
 
Jan. 19, 2020, 2 p.m. N/A N/A N/A 36.0 ppb (33) N/A 1.0 ppb (1) 1.0 ppb (1) 0.9 ppb (10) 30.0 μg/m3 (27) N/A 33.0
 
Jan. 19, 2020, 1 p.m. N/A N/A N/A 32.0 ppb (30) N/A 1.0 ppb (1) 0.0 ppb (0) 0.8 ppb (9) 29.0 μg/m3 (26) N/A 30.0
 
Jan. 19, 2020, noon N/A N/A N/A 31.0 ppb (29) N/A 1.0 ppb (1) 0.0 ppb (0) 0.8 ppb (9) 27.0 μg/m3 (25) N/A 29.0
 
Jan. 19, 2020, 11 a.m. N/A N/A N/A 32.0 ppb (30) N/A 1.0 ppb (1) 0.0 ppb (0) 0.8 ppb (9) 39.0 μg/m3 (35) N/A 35.0
 
Jan. 19, 2020, 10 a.m. N/A N/A N/A 33.0 ppb (31) N/A 1.0 ppb (1) 0.0 ppb (0) 0.8 ppb (9) 30.0 μg/m3 (27) N/A 31.0
 
Jan. 19, 2020, 9 a.m. N/A N/A N/A 34.0 ppb (31) N/A 1.0 ppb (1) 1.0 ppb (1) 0.9 ppb (10) 32.0 μg/m3 (29) N/A 31.0
 
Jan. 19, 2020, 8 a.m. N/A N/A N/A 32.0 ppb (30) N/A 1.0 ppb (1) 0.0 ppb (0) 0.8 ppb (9) 38.0 μg/m3 (35) N/A 35.0
 
Jan. 19, 2020, 7 a.m. N/A N/A N/A 33.0 ppb (31) N/A 1.0 ppb (1) 1.0 ppb (1) 0.9 ppb (10) 43.0 μg/m3 (39) N/A 39.0
 
Jan. 19, 2020, 6 a.m. N/A N/A N/A 34.0 ppb (31) N/A 0.0 ppb (0) 1.0 ppb (1) 0.8 ppb (9) 44.0 μg/m3 (40) N/A 40.0
 
Jan. 19, 2020, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 1.0 ppb (1) 0.7 ppb (8) 44.0 μg/m3 (40) N/A 40.0
 
Jan. 19, 2020, 4 a.m. N/A N/A N/A 31.0 ppb (29) N/A 0.0 ppb (0) 1.0 ppb (1) 0.4 ppb (4) 35.0 μg/m3 (32) N/A 32.0
 
Jan. 19, 2020, 3 a.m. N/A N/A N/A 28.0 ppb (26) N/A 0.0 ppb (0) 6.0 ppb (5) 0.3 ppb (3) 26.0 μg/m3 (24) N/A 26.0
 
Jan. 19, 2020, 2 a.m. N/A N/A N/A 26.0 ppb (24) N/A 0.0 ppb (0) 10.0 ppb (8) 0.3 ppb (3) 34.0 μg/m3 (31) N/A 31.0
 
Jan. 19, 2020, 1 a.m. N/A N/A N/A 16.0 ppb (15) N/A 0.0 ppb (0) 19.0 ppb (15) 0.2 ppb (2) 29.0 μg/m3 (26) N/A 26.0
 
Jan. 19, 2020, midnight N/A N/A N/A 11.0 ppb (10) N/A 0.0 ppb (0) 27.0 ppb (21) 0.2 ppb (2) 34.0 μg/m3 (31) N/A 31.0
 
Jan. 18, 2020, 11 p.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 38.0 ppb (29) 0.1 ppb (1) 26.0 μg/m3 (24) N/A 29.0
 
Jan. 18, 2020, 10 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 43.0 ppb (33) 0.1 ppb (1) 19.0 μg/m3 (17) N/A 33.0
 
Jan. 18, 2020, 9 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 42.0 ppb (32) 0.1 ppb (1) 25.0 μg/m3 (23) N/A 32.0
 
Jan. 18, 2020, 8 p.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) N/A 0.2 ppb (2) 21.0 μg/m3 (19) N/A 19.0
 
Jan. 18, 2020, 7 p.m. N/A N/A N/A 18.0 ppb (17) N/A 1.0 ppb (1) N/A 0.2 ppb (2) 21.0 μg/m3 (19) N/A 19.0
 
Jan. 18, 2020, 6 p.m. N/A N/A N/A 22.0 ppb (20) N/A 0.0 ppb (0) N/A 0.3 ppb (3) 28.0 μg/m3 (25) N/A 25.0
 
Jan. 18, 2020, 5 p.m. N/A N/A N/A 13.0 ppb (12) N/A 0.0 ppb (0) 30.0 ppb (23) 0.2 ppb (2) 16.0 μg/m3 (15) N/A 23.0
 
Jan. 18, 2020, 4 p.m. N/A N/A N/A 18.0 ppb (17) N/A 0.0 ppb (0) 23.0 ppb (18) 0.2 ppb (2) 27.0 μg/m3 (25) N/A 25.0
 
Jan. 18, 2020, 3 p.m. N/A N/A N/A 29.0 ppb (27) N/A 0.0 ppb (0) 13.0 ppb (10) 0.3 ppb (3) 31.0 μg/m3 (28) N/A 28.0
 
Jan. 18, 2020, 2 p.m. N/A N/A N/A 36.0 ppb (33) N/A 0.0 ppb (0) 3.0 ppb (2) 0.3 ppb (3) 29.0 μg/m3 (26) N/A 33.0
 
Jan. 18, 2020, 1 p.m. N/A N/A N/A 36.0 ppb (33) N/A 0.0 ppb (0) 1.0 ppb (1) 0.3 ppb (3) 23.0 μg/m3 (21) N/A 33.0
 
Jan. 18, 2020, noon N/A N/A N/A 27.0 ppb (25) N/A 0.0 ppb (0) 5.0 ppb (4) 0.2 ppb (2) 22.0 μg/m3 (20) N/A 25.0
 
Jan. 18, 2020, 11 a.m. N/A N/A N/A 19.0 ppb (18) N/A 0.0 ppb (0) 13.0 ppb (10) 0.1 ppb (1) 15.0 μg/m3 (14) N/A 18.0
 
Jan. 18, 2020, 10 a.m. N/A N/A N/A 11.0 ppb (10) N/A 0.0 ppb (0) 24.0 ppb (18) 0.1 ppb (1) 16.0 μg/m3 (15) N/A 18.0
 
Jan. 18, 2020, 9 a.m. N/A N/A N/A 10.0 ppb (9) N/A 0.0 ppb (0) 29.0 ppb (22) 0.1 ppb (1) 22.0 μg/m3 (20) N/A 22.0
 
Jan. 18, 2020, 8 a.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 33.0 ppb (25) 0.1 ppb (1) 25.0 μg/m3 (23) N/A 25.0
 
Jan. 18, 2020, 7 a.m. N/A N/A N/A 11.0 ppb (10) N/A 0.0 ppb (0) 29.0 ppb (22) 0.2 ppb (2) 12.0 μg/m3 (11) N/A 22.0
 
Jan. 18, 2020, 6 a.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 36.0 ppb (28) 0.1 ppb (1) 7.0 μg/m3 (6) N/A 28.0
 
Jan. 18, 2020, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.1 ppb (1) 11.0 μg/m3 (10) N/A 32.0
 
Jan. 18, 2020, 4 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (33) 0.1 ppb (1) 19.0 μg/m3 (17) N/A 33.0
 
Jan. 18, 2020, 3 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 40.0 ppb (31) 0.1 ppb (1) 14.0 μg/m3 (13) N/A 31.0
 
Jan. 18, 2020, 2 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 43.0 ppb (33) 0.1 ppb (1) 11.0 μg/m3 (10) N/A 33.0
 
Jan. 18, 2020, 1 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 44.0 ppb (34) 0.1 ppb (1) 33.0 μg/m3 (30) N/A 34.0
 
Jan. 18, 2020, midnight N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 43.0 ppb (33) 0.1 ppb (1) 8.0 μg/m3 (7) N/A 33.0
 
Jan. 17, 2020, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 43.0 ppb (33) 0.1 ppb (1) 9.0 μg/m3 (8) N/A 33.0
 
Jan. 17, 2020, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 43.0 ppb (33) 0.1 ppb (1) 74.0 μg/m3 (60) N/A 60.0
 
Jan. 17, 2020, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) 0.1 ppb (1) 17.0 μg/m3 (15) N/A 35.0
 
Jan. 17, 2020, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 46.0 ppb (35) 0.1 ppb (1) 73.0 μg/m3 (59) N/A 59.0
 
Jan. 17, 2020, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 44.0 ppb (34) 0.1 ppb (1) N/A N/A 34.0
 
Jan. 17, 2020, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 37.0 ppb (28) 0.1 ppb (1) 88.0 μg/m3 (66) N/A 66.0
 
Jan. 17, 2020, 5 p.m. N/A N/A N/A 39.0 ppb (36) N/A 2.0 ppb (3) 12.0 ppb (9) 0.7 ppb (8) 110.0 μg/m3 (78) N/A 78.0
 
Jan. 17, 2020, 4 p.m. N/A N/A N/A 44.0 ppb (41) N/A 3.0 ppb (4) 4.0 ppb (3) 0.9 ppb (10) 96.0 μg/m3 (70) N/A 70.0
 
Jan. 17, 2020, 3 p.m. N/A N/A N/A 41.0 ppb (38) N/A 3.0 ppb (4) 2.0 ppb (2) 1.1 ppb (12) 85.0 μg/m3 (65) N/A 65.0
 
Jan. 17, 2020, 2 p.m. N/A N/A N/A 39.0 ppb (36) N/A 3.0 ppb (4) 0.0 ppb (0) 1.1 ppb (12) 83.0 μg/m3 (64) N/A 64.0
 
Jan. 17, 2020, 1 p.m. N/A N/A N/A 35.0 ppb (32) N/A 2.0 ppb (3) 1.0 ppb (1) 0.8 ppb (9) 78.0 μg/m3 (62) N/A 62.0
 
Jan. 17, 2020, noon N/A N/A N/A 31.0 ppb (29) N/A 1.0 ppb (1) 0.0 ppb (0) 0.6 ppb (7) 44.0 μg/m3 (40) N/A 40.0
 
Jan. 17, 2020, 11 a.m. N/A N/A N/A 32.0 ppb (30) N/A 1.0 ppb (1) 0.0 ppb (0) 0.7 ppb (8) 34.0 μg/m3 (31) N/A 31.0
 
Jan. 17, 2020, 10 a.m. N/A N/A N/A 29.0 ppb (27) N/A 1.0 ppb (1) 0.0 ppb (0) 0.7 ppb (8) 48.0 μg/m3 (44) N/A 44.0
 
Jan. 17, 2020, 9 a.m. N/A N/A N/A 29.0 ppb (27) N/A 1.0 ppb (1) 0.0 ppb (0) 0.5 ppb (6) 39.0 μg/m3 (35) N/A 35.0
 
Jan. 17, 2020, 8 a.m. N/A N/A N/A 30.0 ppb (28) N/A 0.0 ppb (0) 0.0 ppb (0) 0.4 ppb (4) 57.0 μg/m3 (51) N/A 51.0
 
Jan. 17, 2020, 7 a.m. N/A N/A N/A 30.0 ppb (28) N/A 1.0 ppb (1) 0.0 ppb (0) 0.4 ppb (4) 56.0 μg/m3 (50) N/A 50.0
 
Jan. 17, 2020, 6 a.m. N/A N/A N/A 33.0 ppb (31) N/A 1.0 ppb (1) 0.0 ppb (0) 0.5 ppb (6) 63.0 μg/m3 (54) N/A 54.0
 
Jan. 17, 2020, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 0.0 ppb (0) 0.6 ppb (7) 61.0 μg/m3 (53) N/A 53.0
 
Jan. 17, 2020, 4 a.m. N/A N/A N/A 32.0 ppb (30) N/A 0.0 ppb (0) 0.0 ppb (0) 0.3 ppb (3) 58.0 μg/m3 (52) N/A 52.0
 
Jan. 17, 2020, 3 a.m. N/A N/A N/A 29.0 ppb (27) N/A 0.0 ppb (0) 2.0 ppb (2) 0.2 ppb (2) 48.0 μg/m3 (44) N/A 44.0
 
Jan. 17, 2020, 2 a.m. N/A N/A N/A 29.0 ppb (27) N/A 0.0 ppb (0) 3.0 ppb (2) 0.2 ppb (2) 49.0 μg/m3 (45) N/A 45.0
 
Jan. 17, 2020, 1 a.m. N/A N/A N/A 29.0 ppb (27) N/A 0.0 ppb (0) 2.0 ppb (2) 0.3 ppb (3) 55.0 μg/m3 (50) N/A 50.0
 
Jan. 17, 2020, midnight N/A N/A N/A 25.0 ppb (23) N/A 0.0 ppb (0) 8.0 ppb (6) 0.2 ppb (2) 60.0 μg/m3 (52) N/A 52.0
 
Jan. 16, 2020, 11 p.m. N/A N/A N/A 18.0 ppb (17) N/A 0.0 ppb (0) 15.0 ppb (12) 0.2 ppb (2) 40.0 μg/m3 (36) N/A 36.0
 
Jan. 16, 2020, 10 p.m. N/A N/A N/A 16.0 ppb (15) N/A 0.0 ppb (0) 18.0 ppb (14) 0.2 ppb (2) 33.0 μg/m3 (30) N/A 30.0
 
Jan. 16, 2020, 9 p.m. N/A N/A N/A 13.0 ppb (12) N/A 0.0 ppb (0) 21.0 ppb (16) 0.1 ppb (1) 36.0 μg/m3 (33) N/A 33.0
 
Jan. 16, 2020, 8 p.m. N/A N/A N/A 13.0 ppb (12) N/A 0.0 ppb (0) 22.0 ppb (17) 0.2 ppb (2) 28.0 μg/m3 (25) N/A 25.0
 
Jan. 16, 2020, 7 p.m. N/A N/A N/A 13.0 ppb (12) N/A 0.0 ppb (0) 21.0 ppb (16) 0.2 ppb (2) 22.0 μg/m3 (20) N/A 20.0
 
Jan. 16, 2020, 6 p.m. N/A N/A N/A 14.0 ppb (13) N/A 0.0 ppb (0) 20.0 ppb (15) 0.2 ppb (2) 23.0 μg/m3 (21) N/A 21.0
 
Jan. 16, 2020, 5 p.m. N/A N/A N/A 15.0 ppb (14) N/A 0.0 ppb (0) 18.0 ppb (14) 0.2 ppb (2) 23.0 μg/m3 (21) N/A 21.0
 
Jan. 16, 2020, 4 p.m. N/A N/A N/A 17.0 ppb (16) N/A 0.0 ppb (0) 17.0 ppb (13) 0.2 ppb (2) 29.0 μg/m3 (26) N/A 26.0
 
Jan. 16, 2020, 3 p.m. N/A N/A N/A 24.0 ppb (22) N/A 0.0 ppb (0) 8.0 ppb (6) 0.4 ppb (4) 28.0 μg/m3 (25) N/A 25.0
 
Jan. 16, 2020, 2 p.m. N/A N/A N/A 31.0 ppb (29) N/A 0.0 ppb (0) 3.0 ppb (2) 0.4 ppb (4) 42.0 μg/m3 (38) N/A 38.0
 
Jan. 16, 2020, 1 p.m. N/A N/A N/A 36.0 ppb (33) N/A 1.0 ppb (1) 0.0 ppb (0) 0.5 ppb (6) 68.0 μg/m3 (56) N/A 56.0
 
Jan. 16, 2020, noon N/A N/A N/A 29.0 ppb (27) N/A 0.0 ppb (0) 1.0 ppb (1) 0.3 ppb (3) 41.0 μg/m3 (37) N/A 37.0
 
Jan. 16, 2020, 11 a.m. N/A N/A N/A 24.0 ppb (22) N/A 0.0 ppb (0) 7.0 ppb (5) 0.2 ppb (2) 19.0 μg/m3 (17) N/A 22.0
 
Jan. 16, 2020, 10 a.m. N/A N/A N/A 31.0 ppb (29) N/A 0.0 ppb (0) 3.0 ppb (2) 0.3 ppb (3) 14.0 μg/m3 (13) N/A 29.0
 
Jan. 16, 2020, 9 a.m. N/A N/A N/A 36.0 ppb (33) N/A 0.0 ppb (0) 0.0 ppb (0) 0.4 ppb (4) 20.0 μg/m3 (18) N/A 33.0
 
Jan. 16, 2020, 8 a.m. N/A N/A N/A 30.0 ppb (28) N/A 0.0 ppb (0) 5.0 ppb (4) 0.2 ppb (2) 24.0 μg/m3 (22) N/A 28.0
 
Jan. 16, 2020, 7 a.m. N/A N/A N/A 21.0 ppb (19) N/A 0.0 ppb (0) 15.0 ppb (12) 0.2 ppb (2) 7.0 μg/m3 (6) N/A 19.0
 
Jan. 16, 2020, 6 a.m. N/A N/A N/A 25.0 ppb (23) N/A 0.0 ppb (0) 9.0 ppb (7) 0.2 ppb (2) 36.0 μg/m3 (33) N/A 33.0
 
Jan. 16, 2020, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 17.0 ppb (13) 0.2 ppb (2) 19.0 μg/m3 (17) N/A 17.0
 
Jan. 16, 2020, 4 a.m. N/A N/A N/A 17.0 ppb (16) N/A 0.0 ppb (0) 18.0 ppb (14) 0.2 ppb (2) 26.0 μg/m3 (24) N/A 24.0
 
Jan. 16, 2020, 3 a.m. N/A N/A N/A 12.0 ppb (11) N/A 0.0 ppb (0) 22.0 ppb (17) 0.1 ppb (1) 25.0 μg/m3 (23) N/A 23.0
 
Jan. 16, 2020, 2 a.m. N/A N/A N/A 12.0 ppb (11) N/A 0.0 ppb (0) 23.0 ppb (18) 0.1 ppb (1) 24.0 μg/m3 (22) N/A 22.0
 
Jan. 16, 2020, 1 a.m. N/A N/A N/A 14.0 ppb (13) N/A 0.0 ppb (0) 22.0 ppb (17) 0.1 ppb (1) 43.0 μg/m3 (39) N/A 39.0
 
Jan. 16, 2020, midnight N/A N/A N/A 15.0 ppb (14) N/A 0.0 ppb (0) 23.0 ppb (18) 0.1 ppb (1) 38.0 μg/m3 (35) N/A 35.0
 
Jan. 15, 2020, 11 p.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 34.0 ppb (26) 0.1 ppb (1) 26.0 μg/m3 (24) N/A 26.0
 
Jan. 15, 2020, 10 p.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 36.0 ppb (28) 0.1 ppb (1) 30.0 μg/m3 (27) N/A 28.0
 
Jan. 15, 2020, 9 p.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 37.0 ppb (28) 0.1 ppb (1) 33.0 μg/m3 (30) N/A 30.0
 
Jan. 15, 2020, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 38.0 ppb (29) 0.1 ppb (1) 57.0 μg/m3 (51) N/A 51.0
 
Jan. 15, 2020, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 37.0 ppb (28) 0.1 ppb (1) 27.0 μg/m3 (25) N/A 28.0
 
Jan. 15, 2020, 6 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 35.0 ppb (27) 0.1 ppb (1) 28.0 μg/m3 (25) N/A 27.0
 
Jan. 15, 2020, 5 p.m. N/A N/A N/A 12.0 ppb (11) N/A 0.0 ppb (0) 29.0 ppb (22) 0.1 ppb (1) 35.0 μg/m3 (32) N/A 32.0
 
Jan. 15, 2020, 4 p.m. N/A N/A N/A 33.0 ppb (31) N/A 1.0 ppb (1) 13.0 ppb (10) 0.3 ppb (3) 50.0 μg/m3 (45) N/A 45.0
 
Jan. 15, 2020, 3 p.m. N/A N/A N/A 41.0 ppb (38) N/A 1.0 ppb (1) 4.0 ppb (3) 0.7 ppb (8) 68.0 μg/m3 (56) N/A 56.0
 
Jan. 15, 2020, 2 p.m. N/A N/A N/A 39.0 ppb (36) N/A 1.0 ppb (1) 1.0 ppb (1) 0.7 ppb (8) 61.0 μg/m3 (53) N/A 53.0
 
Jan. 15, 2020, 1 p.m. N/A N/A N/A 38.0 ppb (35) N/A 1.0 ppb (1) 0.0 ppb (0) 0.4 ppb (4) 36.0 μg/m3 (33) N/A 35.0